VANE CORE ASSEMBLY FOR USE IN MAKING CENTRIFUGAL ELASTOMER-COATED IMPELLERS

摘要

An elastomeric-covered shrouded impeller, having a pair of disk-like shrouds enclosing vanes and vane passages, which has an improved throat opening having sweeping internal sidewalls is disclosed. A three piece mold core is utilized to form the vane passage and the sweeping curved throat inlet of the impeller.